Recently I tried to change my minecraft profile name (java edition) to 341. I checked its avaliability through https://api.mojang.com/users/profiles/minecraft/341 and it return HTTP 204, indicates it doesn't exist.
But when I browsed to my profile on www.minecraft.net to actually change my profile name, it says this profile name already exists. I tried to use https://api.minecraftservices.com/minecraft/profile/name/341 and it returned HTTP 403, indicates that I can't change my name to 341.
Seems this is not an issue of blocked usernames, as I checked all 46,656 possible 3-character profile names, over 500 names returned no content (mostly random strings like R9Z, S83, R_3, SLG), but I manually checked almost half of them on profile page on www.minecraft.net and it says every one of them already exists.
I can think of no other reason why a profile name doesn't exist but is still unavaliable, so I think it may be a bug of mojang API. But maybe there's another reason, and if so please tell me.
Thanks for helping!
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Ron is correct. There has existed a profile with this name before, and when it was deleted we still reserved the name. We might do a name cleanup at some point, and I have saved this bug as reference.
Meanwhile, could you please not crawl our entire list of names tyvm
Closing as dupe of WEB-4637.
The profile is in a limbo deletion state. Its old UUID was b16b63fa04ff4deeb9b2372ebe7b00b9